Thermal Coagulation of Human Benign Prostatic Hyperplasia Tissues Induced Changes in the Absorption and Scattering Properties in Spectral Range from 590 to 1 064 nm in vitro
1. MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou 510631, China 2. Department of Surgery, Guangdong College of Pharmacy, Guangzhou 510224, China 3. Department of Urology, Central Hospital of Jiangmen, Jiangmen 529071, China 4. Department of Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China 5. Department of Ophthalmology, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
Abstract：The optical properties and their differences of native and coagulated human benign prostatic hyperplasia (BPH) tissues were studied in the spectral range from 590 to 1 064 nm in vitro. The measurements were performed using a spectrophotometer with an integrating sphere attachment, and the absorption and scattering properties were assessed from these measurements using the inverse adding-doubling method. The results of measurement showed that the thermal coagulation of BPH tissues induced obviously the decrease in the absorption coefficients in the spectral range from 590 to 1 064 nm. The peaks in the absorption coefficients for native and coagulated BPH tissues were respectively 0.438 and 0.416 mm-1 corresponding to the same wavelength of 990 nm, the maximum difference in the absorption coefficients of native and coagulated BPH tissues is 86.79% at 1 064 nm, and the minimum difference is 4.74% at 920 nm. The thermal coagulation of BPH tissues induced an increase in the reduced scattering coefficients in the spectral range from 600 to 1 064 nm obviously, and induced a decrease in the reduced scattering coefficients at 590 nm obviously. The peaks in the reduced scattering coefficients for native and coagulated BPH tissues were respectively 1.090 and 1.449 mm-1 corresponding to the same wavelength of 970 nm, and other peaks in the reduced scattering coefficients for native and coagulated BPH tissues were respectively 1.116 and 1.627 mm-1 corresponding to the same wavelength of 1 050 nm, the maximum difference in the reduced scattering coefficients of native and coagulated BPH tissues is 47.73% at 1 064 nm, and the minimum difference is 4.86% at 600 nm.
Key words：Thermal coagulation;Human benign prostatic hyperplasia tissues;Absorption and scattering properties;Integrating-sphere
魏华江1,邢达1*,何博华2,吴荣海3,谷怀民1,巫国勇4,陈雪梅5. 热凝固致良性前列腺增生组织在590～1 064 nm的吸收和散射特性的变化[J]. 光谱学与光谱分析, 2008, 28(02): 394-398.
WEI Hua-jiang1,XING Da1*,HE Bo-hua2,WU Rong-hai3,GU Huai-min1,WU Guo-yong4,CHEN Xue-mei5 . Thermal Coagulation of Human Benign Prostatic Hyperplasia Tissues Induced Changes in the Absorption and Scattering Properties in Spectral Range from 590 to 1 064 nm in vitro. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(02): 394-398.
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